Advertisement
5.2
A
M
UXILIARY
5.2.1
On the request the AR2 gear motor can be supplied with 2 or 3 auxiliary
microswitches that can be adjusted in any position of the rotation angle.
5.2.2
For adjusting the auxiliary microswitches' cams proceed as for endswitches'
cams as indicated in paragraphs from 4.1.4 to 4.1.11.
5.3
F
EEDBACK
5.3.1
On request the AR electric rotary gear motor can be supplied with 1 or 2
feedback potentiometers (Pot. A and pot. B).
5.3.2
The resistance value of the potentiometer is indicated on the label.
5.3.3
If the resistance value does not correspond to the one wished in the shaft
position, it is necessary to operate on the potentiometer shaft. During this
operation the gear motor not run.
5.3.4
The potentiometer shaft is frictioned and is accessible from the POWER END
side. (See picture 3).
5.3.5
Disconnect the cables connected with the regulation system from the respective
terminals No. 30, 31, 32 (Pot. A) and, if necessary, from terminals No. 33, 34,
35 (Pot. B).
5.3.6
By means of a cut screwdriver rotate the potentiometer shaft and measure the
resistance value or 0 ohm in position "CLOSED" and the max. value in position
"OPEN".
5.3.7
The gearbox between the AR2 gear motor shaft and the potentiometer shaft is
foreseen for a 90° rotation angle. Hence, should the rotation angle of the gear
motor shaft be adjusted for a rotation lower than 90°, and then the variation of
the resistance value will be proportionally reduced.
If, on the contrary, the rotation angle has been adjusted for an angle higher
than 90° there will be no further increase in resistance when the gear motor
shaft is over 90°.
5.3.8
By rotating the potentiometer:
- clockwise ↻ the resistance value increase
- counter clockwise ↺ the resistance value decreases.
ICROSWITCHES
P
/
OTENTIOMETER
S
Picture n. 3
6 of 8
Hide quick links:
Advertisement
